body {
    height: 100vh;
    background: url(../images/gou.jpg) no-repeat center;
    background-size: cover;
}

.header-in {
    height: 80px;
    line-height: 80px;
    text-align: center;
    font-size: 22px;
    font-weight: 500;
    color: #fb7299;
}

.control-in {
    /* background-color: aqua; */
    text-align: center;
}

.control button {
    background-color: #fb7299;
    color: #fff;
    text-align: center;
    font-size: 16px;
    cursor: pointer;
    transition: background-color .3s;
    padding: 8px 20px;
    border-radius: 2px;

    &:hover {
        background-color: #ed8ca8;
    }
}

.group h3 {
    height: 40px;
    line-height: 40px;
    text-align: center;

    a {
        font-size: 14px;
        color: #3288dd;
        transition: all .3s;

        &:hover {
            font-weight: bold;
            color: #084f96;
            text-decoration: underline;
        }
    }
}



.group ul {
    display: flex;
    justify-content: center;

    li {
        margin: 5px;
        width: 120px;
        height: 50px;
        line-height: 50px;
        box-sizing: content-box;
        border: 1px solid #f1f2f3;
        border-radius: 4px;
        background-color: #f6f7f8;
        color: #61666d;
        text-align: center;
        font-weight: 400;
        transition: background-color .3s, color .3s;
        position: relative;

    }

    li.active {
        background-color: #438cd4;
        color: #fff;
    }
}



.close-btn {
    width: 15px;
    height: 15px;
    line-height: 15px;
    position: absolute;
    right: 0;
    top: 0;
    cursor: pointer;
    transition: all .3s;

    &:hover {
        color: #ffff;
        background-color: #db3752;
        border-top-right-radius: 4px;
    }
}


.countdown {
    text-align: center;
    color: #d699aa;
    font-size: 18px;
    padding: 5px 0;
    font-weight: 500;
}

.control .btn-addGroup {
    background-color: #438cd4;
    margin: 10px 0;

    &:hover {
        background-color: #5ea6ee;
        margin: 10px 0;
    }
}